Lace-braiding machine



H. BUSCHER LACE BRAIDING 'MACHINE 1 2 sheets-sheet l Filed Aug. 14 1919hw Q ar, 6, 1923. y 1,447,530

, H. BUSCHER LACE -BRAIDING MACHINE Filed Aug. 14, 1919 2 sheets-sheet 2Patented Mar. 6, 1923.

Mami@ LACE-Banniere MACHINE.

Application Yfiled August 14, 1919. Serial No. 317,4895.

(GRANTED linnen THE rnovisIoNs or Tim ACT or MARCH 3, 1921, 41 STAT. L.,1313.)

To all 'whom t may concern.'

Be it known that I, HERMANN BUSCHER, a citizen of the German Republic,and resident of Langerfeld, near Barmen, Germany, have invented certainnew and useful Improvements in Lace-Braiding Machines, for which I haveiiled an applicationior patent in Germany on Oct. 3,1,1`914,PatentrNo.294966,A and of which the following is a specilication. l y

v My invention relates toa sofcalledsingle thread lace braiding machinewherein .the track for the bobbin-carriers is composed of a series ofsubstantially circular partial tracks communicating with each other ontheir points of contact, and wherein each partial track isl provided`with rotatable and arrestable drivers for the bobbin carriers, saiddrivers being controlled by the pattern gear and adapted to be rotatedonly when the bobbin carriers are intended to be moved on the particularpartial track. In the known machines of this kindeach driver isrotatable in one direction only, the direction of rotation of one driverbeing contrary to that of the adjacent one. v y Consequently the bobbincarriers canbe moved inthe `partialtracks merely in thepredetermineddirect-ion oi rotation of the respective drivers.

The main object of my inventionis topro- `vide pattern gear controlledmeans whereby the bobbin carriers can be moved in .each partial track,at pleasure, eitherin `the one or the other direction. By these means,on the one hand, many superfluous movements of the bobbin carriershitherto necessary in producing certain known patterns may be avoidedand consequently the` number of pattern cards reduced. while on theotherl hand a novel mode of moving the bobbin carriers through theltrackand therebyY the production ci certainy new patternslis renderedpossible, for instance, the bobbin carfiers maville moved trom. .0.11partial .track to any other partialtrackwhile remaining on thesame sideof the.track t hat is to say, without interbraidi'ngA the ,threads of.the bobbins which by this movementf .change their ,respectivepositions. l Y y 4 With this and other-objects in view. my inventionC-Onsstsln .the Iievelfarrauamenfs landcombinatoa ffnaiftafullvdes theidiomas@ .j `n .laad lni in the claims, reference being had to theaccompanying drawings, in Which- VFig. 1 is a top view, partly insection, of a portion of a lace braiding machine, UF 1g. 2 is a.sectional elevation taken on the `line A-A `of Fig. 1, Fig. 3. is asectional eleva-tion on the line idf-.B of the Fig. 1, and

Fig'.r4 is a detail.

`Like letters of reference indicate like parts throughoutthe drawings.

a is ythe bottom plate of the machine to which are fastened thelpillarsZ2. The latter bear at their upper ends the fixed circular plates csituated as well known in recesses of the upper plate d. The spaces c1between the plates c andthe recessed upper plate d form the track forthe bobbin carriers which, as obvious from Fig. 1, is composed of aseries of circular partial tracks communicatingr with each other betweeneach pair of adjacent plates c. For moving the bobbin carriers in 'thetrack each partial track is provided with a driver f situatedimmediately below the respective plate 0. The drivers f vare vby meansof their sleeve-like hubs f1 rotatablyv mounted on the respectivepillars b. Y

According to my invention each driver may beV rotated, at pleasure, tothe left or to the right. To this end, there are arranged two inipellersfor each driver, said impellers consistingr of a. pair of toothed wheelsg and e, spaced apart and rotatably mounted the one, g, on theVdriver-hub f1 which for this purpose is provided with a shoulder f2,the other. e, below the said hub immediately on the pillar by. Allwheels g and eof the machine areconstantly rotating, one each ofsaid'wheels being driven by means of connecting Vgearings D, kE and D.F, while all other are Vrotated by the mutual mesh of the adjacentwheels g `and e, respectively. Pro- .visionis made however that thewheels g and eA belonging .tonne and rthesarne driver ,are drivenin,counter direction. For instancalbytbe engagement of the connecting 'Whl.E Wth thaflvhly .of the 011e driver and by., the engagement Voit" theconnecting' wheel F. with thevvh'eel e of the v'adjacent river,thevvheel q visible in Figs. 2 and 3 y `f the -lefhuwhile `the wheelvisi- Ie a me maestri-a@ aan Accordingly the wheels meshing therewithare also rotated in counter' direction, but in the immediatelyneighboured pair of wheels it is the wheel e that revolves to the leftand the wheel g that revolves to the right, and so on.

Between each pair of wheels g and e a coupling L is mounted on the hubflot the driver, the coupling being by means of a feather-key axiallydisplaceable but nonrotatable on the hub. The coupling z, has on itsupper and lower tace clutches adapted to coact with correspondingclutches g1 and el provided on' the lower face of the wheel g landen theupper tace of the wheel e, respectively, so that by an axialdisplacement ot the vcoupling sleeve 7i the driver 7i may at pleasure becoupled tothe wheel g or to the wheel e and thus rota-ted `one time tothe lett, the other time to the right, or finally disconnected from bothwheels and thereby arrested. t t Y The coupling sleeve /z` has acircumferential groove engaged by a 'forked arm z', fixed toa rod /cwhich latter is vertically guided in holes ot the bottom plate (t andthe up per plate d. Twc coiled springs Z and fm surrounding the rod 7care situated the one above, the other below the hub portion ol' the armc', ysaid springs having the tendency to hold the rod /c` andtherewiththe coupling sleeve/7i` in their middle position wherein the driver isdisconnected from the wheel g as well as from the wheel e. The axialdisplacement ot the coupling sleeve 7L is etiected by incans oit thepattern gear.v For this purpose two angle levers o and p are providedwhich are pivotally journalled on a bracket a, fastened to the undersideot the bot-tom plate allot the machine. .One arm each osaid twoanglelevers is, in a well kncm'n manner, by meansot intermediatecombinations ot rods and levers 01, 02J o?? and p1, p2and'pa,respectivelyconnected-to a separate lifting wire ot the patterngear so that the twolevers 0 and p may be turned independently from oneanother. The other arms ot ,the angle levers 0 and Yp engage a head qprovided at the lower end of the rod, and what is more,` the lever oengages said head troni below, the lever p in the contrary iroinvabove.y Therefore, ony turning the ,Y lever o by means ot the pattern gear therod 7c is lifted, buton'turning the lever p it is lowered. causing thecoupling sleeve iz toengagefeitlier the clutches of the wheel g orlthatV ofthe wheel e. After thepattern gear has released the respectivelever Q or p the rodl and the coupling sleeve /tare returned intotheirmiddle position by the action of theone or theother spring Z or mi,while the lever 0 orp is returned tov itsinitial Vposition the Aactionof the spring `ot or prespectively., In e .ordertO securely holdtheP-0dll: and the sleeve h in the mddle'or disengag- Ving position aspring bolt with wedge-like notches are, as is obvious from Fig. l, inthis instance, provided with two driving edges eac-h, that is to say thenotches are so shaped that the drivers are apt to take the bobbincarriers along in both directions The notches ot the drivers arefurthermore', but in a known manner, so shaped that each driver, whenarrested closes the respective partial track aga-inst the neighbouringone. Thus the drivers resting for a time serve simultaneously as a guideJfor the bobbin carriers moving en the adjacent partial track, lnsteadotor besides this, the usual and well known switches, `preferablycontrolled by the pattern gear, may be arranged for guiding the bobbin.carriers at the communication-places of the partial tracks.

The drivers are in the example, shown adapted to rotate each time torone halt revolution oi the wheel g ore, whereupon they are arrested forat least one `further halt revolution ot the wheels g and c. in order toprevent unintended rotation of the drivers after heilig disconnectedtrom the wheels g and e, t-he hub flot each driver is provided with twoiiattened portions e, c. arranged at diametrally'opposite sides.`Coact-ing with said flattened portions lis a spring bolt u which isguided in a bracket t fastened to the underside ot' the upper plate Zand bearing with its flat head against the .one or the other flattenedportion e, u of the driver hub. thus securing the driver in its restingposition. As will be readily understood from the foregoing description,all the drivers may, at pleasure, be rotated either to the lett or tothe right,A consequently the bobbin carriers can at every place ot thetrack, that is to say,

independently ot the partic.ularpartial track Y Thusquite novell modeset moving the bobbin carriers through the track result, which uenablesme toproduce certain new patterns and'to omit many idle movements of thebobbin "carriers hitherto necessary, in `prodncing known patterns.Claims: Y y y ,1. In a lace braiding machine, in `combination: aVplurality yoibobbin carriers, a

trackforsaid-bobbin carriers, rotatable and 'arrestable drivers foilmpving said -bobbin carriers in said track,l and pattern gear controlleddirect and reverse mechanism for each of-said drivers whereby it may berotated, first in one direction and theirv in theother.

2. In a lace braiding machine', in 'combination: a plurality of bobbincarriers, a track for said bobbin-carriers, rotatable and arrestabledrivers adapted to move said bo=bbin carriers in vsaid trac-k in bothdirections,

two impellers for each of said drivers, said impellers lbeing adapted tocontinuously ro tate, theone to the'left, the other to the right, andpattern gear controlled means normally held in inoperative position andadapted to connect the drivers either to the one or the other of therespective two impellers.

3. In a lace braiding machine, incombinatio-n: a plurality of bobbincarriers, a track for said bobbinV carriers, a series of iixed illars, aseries of rotatable and arrestable drivers with sleeve-like hubs mountedon said pillars and adapted to move the boibbin carriers in said trackin both directions, a series of gear wheels, rotatably mounted on saidsleeve-like hubs of said drivers, a second series of gear wheels mountedcoaxially with the wheels of said first series of gear wheels, thewheels of said second series of gear wheels being adapted to revolve incounter direction to the respective wheels of said` first series of gearwheels, clutches on the adjacent faces of said gear wheels, a doublefaced coupling between each coi-axial pair of said gear Wheels, saidcouplings being axially movable but non rotatably mounted on saidsleeve-like hubs of said drivers`r resilient means tending to hold saidcouplingsin their inoperative position, and pattern gear controlledmeans adapted toaxially displace said couplings.

4,-. In a lace braidingmachine in combination: a plurality of bobbincarriers, a track for said bobbin carriers, a series of fixed pillars, aseries of rotatable and arv restable drivers with sleeve-like hubsmounted on said pillars and; adapted to move the bobbin carriers in saidtrack in both directions, a series of gear wheels yrotatably mountedonsaid sleeve-like hubs of said drivers, a second series of gearwheelsmounted co-aXially with the Wheels of said first series of gearWheels, the Wheels of said second series of gear wheels being adapted torevolve in counter direction to the respective Wheels of said firstseries of gear Wheels, means for continuously rotating said two seriesof gear wheels, clutches on the adjacent faces of said gear Wheels, adouble faced coupling between each coaxial pair of said gear wheels,said couplings being axially movable but not rotatably mounted on saidsleeve-like hubs of said drivers, forked arms engaging a groove in saidcouplings for governing same, vertically guided rods carrying saidforked arms, resilient means tending to hold said rods with said forkedarms in their middle position, and `pairs of pattern gear controlledlevers, engaging said rods and adapted to lift and lower said rods withsaid forked arms.

5. In a lace braiding machine, in combination: a plurality of bobloincarriers, a track for said vbobbin carriers, a series of fixed pillars,a series of rotatable and arrest-able drivers with sleeve-like hubsmounted on said pillars and adapted to move said bobbin carriers in saidtrack in both direcgear wheels being adapted torevolveinl counterdirection to the respective wheels of said first series of lgear wheels,connecting gearings adapted to continuously rota-te said two series ofgear wheels, clutches on the adjacent faces of said gear wheels, adouble faced coupling between each co-aXia-l pair of said gear wheels,said couplings being axially movable `but non rotatable on saidsleeve-like hubs of said drivers, forked arms engaging a groove in saidcouplings for governing same, vertically guided rods carrying saidforked arms, two sets of coiled springs surrounding said rods andtending to hold said rods with said forked arms in their middleposition, spring bolts adapted to secure said rods against unintendedmovement, and pairs of pattern gear controlled levers, engaging saidrods and adapted to lift and lower said rods with said forked arms.

In testimony whereof I have hereunto set my hand.

